The biggest offence against protocol was certainly changing route within controlled airspace without clearing it with ATC.
Negative. First FLY THE AEROPLANE. That includes not hitting rising ground you can't out-climb.
TELL Air Traffic you are doing that. YOU are flying the aeroplane, not them. YOU will die when you hit the mountain while they go home to the wife and kids.
They are down on the ground in their safe little tower because YOU are up in the air in a potentially lethal flying machine; not the other way around. I detect a trend in PPLs these days that seems to have forgotten that. Some even seem to think the radio is a primary flying control.
Flying into a mountain because you didn't yet have clearance to turn is the act of a Darwin-dick-of-the-year candidate; if you are daft enough to do it you will improve the human gene pool by your act.